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Chapter 22-B: Physiology of the Cardiovascular System

Anatomy & Physiology 8th Edition by Kevin T. Patton, Gary A. Thibodeau

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Chapter 22-B: Physiology of the Cardiovascular System

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

  1. If the AV node were forced to assume pacemaker activity, the resulting pulse rate would be _____ beats per minutes.
a. 10 to 30
b. 20 to 40
c. 30 to 50
d. 40 to 60

 

ANS:   D                     DIF:    Memorization                                     REF:    Page 694

TOP:    Conduction System of the Heart

 

  1. The normal pattern of impulse conduction through the heart is:
a. AV node, SA node, bundle of His, and Purkinje fibers.
b. AV node, SA node, Purkinje fibers, and bundle of His.
c. SA node, AV node, Purkinje fibers, and bundle of His.
d. SA node, AV node, bundle of His, and Purkinje fibers.

 

ANS:   D                     DIF:    Memorization

REF:    Page 693|Page 694                             TOP:    Conduction System of the Heart

 

  1. Which of the following most accurately describes what is measured by an electrocardiogram?
a. Electrical conductivity
b. Number of contractions per minute
c. The speed and strength of contractions
d. Any abnormal functioning

 

ANS:   A                     DIF:    Memorization                                     REF:    Page 685

TOP:    Electrocardiogram (ECG)

 

  1. Which of the following would not cause an ectopic beat?
a. Bundle of His
b. Purkinje fibers
c. SA node
d. AV node

 

ANS:   C                     DIF:    Memorization                                     REF:    Page 683

TOP:    Conduction System of the Heart

 

  1. The QRS complex represents:
a. depolarization of the atria.
b. repolarization of the atria and depolarization of the ventricles.
c. depolarization of both the atria and ventricles.
d. repolarization of the ventricles.

 

ANS:   B                     DIF:    Memorization                                     REF:    Page 696

TOP:    ECG Waves

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